PPC: Vector ICs: debugger should save registers for vector store ics.

PPC: Vector ICs: debugger should save registers for vector store ics.

Port bd32a9f711cb14c2b7c34512d43e78bd24960124

R=mvstanton@chromium.org, dstence@us.ibm.com, michael_dawson@ca.ibm.com
BUG=

Committed: https://crrev.com/05d816cbd23e8af43dad66aad867d904c62cb52e
Cr-Commit-Position: refs/heads/master@{#28847}

[MTBrandyberry, 2015-06-08 16:31:36]

mbrandy@us.ibm.com changed reviewers:
+ dstence@us.ibm.com
- dstence@ub.ibm.com

[dstence, 2015-06-08 16:34:41]

lgtm

[MTBrandyberry, 2015-06-08 16:35:33]

The CQ bit was checked by mbrandy@us.ibm.com

[commit-bot: I haz the power, 2015-06-08 16:35:55]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1169763003/1

[commit-bot: I haz the power, 2015-06-08 17:27:46]

The CQ bit was unchecked by commit-bot@chromium.org

[commit-bot: I haz the power, 2015-06-08 17:27:50]

Try jobs failed on following builders:
  v8_win_rel on tryserver.v8 (JOB_FAILED,
http://build.chromium.org/p/tryserver.v8/builders/v8_win_rel/builds/6529)

[MTBrandyberry, 2015-06-08 17:31:07]

The CQ bit was checked by mbrandy@us.ibm.com

[commit-bot: I haz the power, 2015-06-08 17:31:33]

CQ is trying da patch. Follow status at
 https://chromium-cq-status.appspot.com/patch-status/1169763003/1

[commit-bot: I haz the power, 2015-06-08 18:20:46]

Committed patchset #1 (id:1)

[commit-bot: I haz the power, 2015-06-08 18:21:00]

Patchset 1 (id:??) landed as
https://crrev.com/05d816cbd23e8af43dad66aad867d904c62cb52e
Cr-Commit-Position: refs/heads/master@{#28847}